Open AccessBandwidth enhancement of injection-locked distributed reflector lasers with wirelike active regions
Author(s) -
Seunghun Lee,
Devang Parekh,
Takahiko Shindo,
Weijian Yang,
Peng Guo,
Daisuke Takahashi,
Nobuhiko Nishiyama,
Connie J. Chang-Hasnain,
Shigehisa Arai
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.016370
Subject(s) - bandwidth (computing) , optics , biasing , laser , optoelectronics , distributed bragg reflector , semiconductor laser theory , materials science , modulation (music) , physics , distributed bragg reflector laser , voltage , telecommunications , computer science , quantum mechanics , acoustics
The modulation bandwidth enhancement of distributed reflector (DR) lasers with wirelike active regions utilizing optical injection locking is demonstrated both theoretically and experimentally. By the rate equation analysis, it is shown that DR lasers with wirelike active regions realize a low optical injection power and a large bandwidth enhancement under small operation currents. Experimentally, the small-signal bandwidth is increased to >15 GHz at a bias current of 5 mA, which is 4 times smaller than that for conventional edge-emitting lasers. A large signal modulation at 10 Gbps is also performed at the same bias current of 5 mA and voltage swing of 0.4 V(pp), and error-free detection was confirmed under the low-power conditions.
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